./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:37:56,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:37:56,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:37:56,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:37:56,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:37:56,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:37:56,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:37:56,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:37:56,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:37:56,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:37:56,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:37:56,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:37:56,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:37:56,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:37:56,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:37:56,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:37:56,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:37:56,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:37:56,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:37:56,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:37:56,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:37:56,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:37:56,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:37:56,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:37:56,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:37:56,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:37:56,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:37:56,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:37:56,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:37:56,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:37:56,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:37:56,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:37:56,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:37:56,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:37:56,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:37:56,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:37:56,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:37:56,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:37:56,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:37:56,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:37:56,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:37:56,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:37:56,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:37:56,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:37:56,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:37:56,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:37:56,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:37:56,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:37:56,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:37:56,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:37:56,603 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:37:56,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:37:56,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:37:56,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:37:56,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:37:56,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:37:56,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:37:56,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:37:56,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:37:56,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:37:56,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:37:56,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:37:56,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:37:56,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:37:56,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:37:56,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:37:56,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:37:56,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:37:56,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:37:56,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:37:56,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:37:56,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:37:56,608 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:37:56,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:37:56,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:37:56,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:37:56,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 [2021-12-14 15:37:56,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:37:56,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:37:56,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:37:56,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:37:56,849 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:37:56,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2021-12-14 15:37:56,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556f5981d/57855bb744c8438ebaefd6c97341bb8a/FLAG7f46e28c8 [2021-12-14 15:37:57,794 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:37:57,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2021-12-14 15:37:57,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556f5981d/57855bb744c8438ebaefd6c97341bb8a/FLAG7f46e28c8 [2021-12-14 15:37:58,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556f5981d/57855bb744c8438ebaefd6c97341bb8a [2021-12-14 15:37:58,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:37:58,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:37:58,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:37:58,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:37:58,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:37:58,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:37:58" (1/1) ... [2021-12-14 15:37:58,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc19b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:58, skipping insertion in model container [2021-12-14 15:37:58,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:37:58" (1/1) ... [2021-12-14 15:37:58,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:37:58,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:37:59,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[376251,376264] [2021-12-14 15:37:59,912 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[383339,383352] [2021-12-14 15:38:00,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:00,094 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:38:00,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[376251,376264] [2021-12-14 15:38:00,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[383339,383352] [2021-12-14 15:38:00,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:00,962 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:38:00,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00 WrapperNode [2021-12-14 15:38:00,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:00,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:00,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:38:00,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:38:00,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,458 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-12-14 15:38:01,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:01,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:38:01,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:38:01,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:38:01,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:38:01,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:38:01,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:38:01,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:38:01,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:01,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:38:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:38:01,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:38:01,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:38:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:38:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:38:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:38:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:38:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:38:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:38:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:38:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:38:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:38:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:38:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:38:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:38:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:38:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:38:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:38:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:38:02,074 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:38:02,075 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:38:07,911 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:38:07,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:38:07,938 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-14 15:38:07,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:07 BoogieIcfgContainer [2021-12-14 15:38:07,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:38:07,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:38:07,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:38:07,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:38:07,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:37:58" (1/3) ... [2021-12-14 15:38:07,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e54d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:07, skipping insertion in model container [2021-12-14 15:38:07,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00" (2/3) ... [2021-12-14 15:38:07,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e54d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:07, skipping insertion in model container [2021-12-14 15:38:07,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:07" (3/3) ... [2021-12-14 15:38:07,954 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.06.cil-2.c [2021-12-14 15:38:07,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:38:07,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:38:08,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:38:08,031 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:38:08,031 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:38:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 15:38:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:08,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:08,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:08,120 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:08,125 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-14 15:38:08,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:08,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918725058] [2021-12-14 15:38:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:08,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:08,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918725058] [2021-12-14 15:38:08,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918725058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:08,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:08,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:38:08,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931961952] [2021-12-14 15:38:08,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:08,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:38:08,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:08,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:38:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:38:08,543 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:09,467 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2021-12-14 15:38:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:38:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:09,491 INFO L225 Difference]: With dead ends: 4896 [2021-12-14 15:38:09,492 INFO L226 Difference]: Without dead ends: 2424 [2021-12-14 15:38:09,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:38:09,502 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:09,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16728 Invalid, 440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:38:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-12-14 15:38:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2021-12-14 15:38:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 15:38:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2021-12-14 15:38:09,616 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2021-12-14 15:38:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:09,617 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2021-12-14 15:38:09,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2021-12-14 15:38:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:09,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:09,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:09,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:38:09,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2021-12-14 15:38:09,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054102186] [2021-12-14 15:38:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:09,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:09,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:09,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054102186] [2021-12-14 15:38:09,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054102186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:09,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:09,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:09,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812235245] [2021-12-14 15:38:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:09,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:09,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:09,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:09,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:09,813 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:10,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:10,924 INFO L93 Difference]: Finished difference Result 2651 states and 4792 transitions. [2021-12-14 15:38:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:10,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:10,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:10,938 INFO L225 Difference]: With dead ends: 2651 [2021-12-14 15:38:10,939 INFO L226 Difference]: Without dead ends: 2438 [2021-12-14 15:38:10,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:10,943 INFO L933 BasicCegarLoop]: 4325 mSDtfsCounter, 4580 mSDsluCounter, 16381 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20706 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:10,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20706 Invalid, 934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:38:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-12-14 15:38:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2348. [2021-12-14 15:38:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8383620689655173) internal successors, (4265), 2322 states have internal predecessors, (4265), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 15:38:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4305 transitions. [2021-12-14 15:38:11,007 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4305 transitions. Word has length 112 [2021-12-14 15:38:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:11,007 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4305 transitions. [2021-12-14 15:38:11,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4305 transitions. [2021-12-14 15:38:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:11,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:11,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:11,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:38:11,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2021-12-14 15:38:11,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:11,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466484483] [2021-12-14 15:38:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:11,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:11,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466484483] [2021-12-14 15:38:11,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466484483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:11,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:11,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:11,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485279362] [2021-12-14 15:38:11,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:11,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:11,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:11,171 INFO L87 Difference]: Start difference. First operand 2348 states and 4305 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:13,028 INFO L93 Difference]: Finished difference Result 2943 states and 5254 transitions. [2021-12-14 15:38:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:13,041 INFO L225 Difference]: With dead ends: 2943 [2021-12-14 15:38:13,041 INFO L226 Difference]: Without dead ends: 2730 [2021-12-14 15:38:13,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:13,043 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4793 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 21495 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:13,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 21495 Invalid, 1785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-12-14 15:38:13,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2571. [2021-12-14 15:38:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8165210484511518) internal successors, (4574), 2522 states have internal predecessors, (4574), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-14 15:38:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4655 transitions. [2021-12-14 15:38:13,124 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4655 transitions. Word has length 112 [2021-12-14 15:38:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:13,124 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4655 transitions. [2021-12-14 15:38:13,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4655 transitions. [2021-12-14 15:38:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:13,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:13,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:13,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:38:13,128 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2021-12-14 15:38:13,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:13,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547439217] [2021-12-14 15:38:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:13,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:13,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:13,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547439217] [2021-12-14 15:38:13,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547439217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:13,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:13,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:13,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091270995] [2021-12-14 15:38:13,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:13,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:13,244 INFO L87 Difference]: Start difference. First operand 2571 states and 4655 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:15,165 INFO L93 Difference]: Finished difference Result 3701 states and 6440 transitions. [2021-12-14 15:38:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:15,188 INFO L225 Difference]: With dead ends: 3701 [2021-12-14 15:38:15,188 INFO L226 Difference]: Without dead ends: 3267 [2021-12-14 15:38:15,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:15,193 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21522 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:15,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21522 Invalid, 1857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:38:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-12-14 15:38:15,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2982. [2021-12-14 15:38:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2885 states have (on average 1.7805892547660311) internal successors, (5137), 2891 states have internal predecessors, (5137), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-14 15:38:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5288 transitions. [2021-12-14 15:38:15,325 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5288 transitions. Word has length 112 [2021-12-14 15:38:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:15,326 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 5288 transitions. [2021-12-14 15:38:15,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5288 transitions. [2021-12-14 15:38:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:15,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:15,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:15,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:38:15,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2021-12-14 15:38:15,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:15,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061016326] [2021-12-14 15:38:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:15,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:15,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061016326] [2021-12-14 15:38:15,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061016326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:15,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:15,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:15,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041206553] [2021-12-14 15:38:15,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:15,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:15,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:15,443 INFO L87 Difference]: Start difference. First operand 2982 states and 5288 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:17,322 INFO L93 Difference]: Finished difference Result 5184 states and 8757 transitions. [2021-12-14 15:38:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:17,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:17,341 INFO L225 Difference]: With dead ends: 5184 [2021-12-14 15:38:17,342 INFO L226 Difference]: Without dead ends: 4339 [2021-12-14 15:38:17,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:17,347 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21518 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:17,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21518 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-12-14 15:38:17,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 3807. [2021-12-14 15:38:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7302595251242407) internal successors, (6267), 3632 states have internal predecessors, (6267), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-14 15:38:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6564 transitions. [2021-12-14 15:38:17,486 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6564 transitions. Word has length 112 [2021-12-14 15:38:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:17,487 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6564 transitions. [2021-12-14 15:38:17,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6564 transitions. [2021-12-14 15:38:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:17,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:17,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:38:17,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2021-12-14 15:38:17,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:17,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439502318] [2021-12-14 15:38:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:17,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:17,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:17,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439502318] [2021-12-14 15:38:17,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439502318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:17,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:17,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:17,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791297597] [2021-12-14 15:38:17,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:17,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:17,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:17,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:17,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:17,594 INFO L87 Difference]: Start difference. First operand 3807 states and 6564 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:18,481 INFO L93 Difference]: Finished difference Result 6031 states and 10100 transitions. [2021-12-14 15:38:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:18,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:18,498 INFO L225 Difference]: With dead ends: 6031 [2021-12-14 15:38:18,499 INFO L226 Difference]: Without dead ends: 4359 [2021-12-14 15:38:18,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:18,506 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4581 mSDsluCounter, 16380 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 20691 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:18,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 20691 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:38:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2021-12-14 15:38:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 3807. [2021-12-14 15:38:18,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7277747101049143) internal successors, (6258), 3632 states have internal predecessors, (6258), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-14 15:38:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6555 transitions. [2021-12-14 15:38:18,628 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6555 transitions. Word has length 112 [2021-12-14 15:38:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:18,629 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6555 transitions. [2021-12-14 15:38:18,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6555 transitions. [2021-12-14 15:38:18,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:18,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:18,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:18,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:38:18,633 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2021-12-14 15:38:18,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:18,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018938055] [2021-12-14 15:38:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:18,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018938055] [2021-12-14 15:38:18,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018938055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:18,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:18,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:18,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303122412] [2021-12-14 15:38:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:18,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:18,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:18,734 INFO L87 Difference]: Start difference. First operand 3807 states and 6555 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:19,586 INFO L93 Difference]: Finished difference Result 6022 states and 10057 transitions. [2021-12-14 15:38:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:19,607 INFO L225 Difference]: With dead ends: 6022 [2021-12-14 15:38:19,608 INFO L226 Difference]: Without dead ends: 4350 [2021-12-14 15:38:19,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:19,617 INFO L933 BasicCegarLoop]: 4307 mSDtfsCounter, 4672 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 16613 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:19,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 16613 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:38:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-12-14 15:38:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 3807. [2021-12-14 15:38:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7252898950855882) internal successors, (6249), 3632 states have internal predecessors, (6249), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-14 15:38:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6546 transitions. [2021-12-14 15:38:19,784 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6546 transitions. Word has length 112 [2021-12-14 15:38:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:19,785 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6546 transitions. [2021-12-14 15:38:19,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6546 transitions. [2021-12-14 15:38:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:19,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:19,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:19,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:38:19,789 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2021-12-14 15:38:19,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:19,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420795680] [2021-12-14 15:38:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:19,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:19,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:19,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420795680] [2021-12-14 15:38:19,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420795680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:19,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:19,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:19,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650652886] [2021-12-14 15:38:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:19,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:19,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:19,908 INFO L87 Difference]: Start difference. First operand 3807 states and 6546 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:21,677 INFO L93 Difference]: Finished difference Result 8873 states and 14409 transitions. [2021-12-14 15:38:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:21,704 INFO L225 Difference]: With dead ends: 8873 [2021-12-14 15:38:21,704 INFO L226 Difference]: Without dead ends: 7203 [2021-12-14 15:38:21,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:21,714 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 5020 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 21491 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:21,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 21491 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:38:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7203 states. [2021-12-14 15:38:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7203 to 5454. [2021-12-14 15:38:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5454 states, 5101 states have (on average 1.666535973338561) internal successors, (8501), 5119 states have internal predecessors, (8501), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2021-12-14 15:38:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 9092 transitions. [2021-12-14 15:38:21,917 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 9092 transitions. Word has length 112 [2021-12-14 15:38:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:21,917 INFO L470 AbstractCegarLoop]: Abstraction has 5454 states and 9092 transitions. [2021-12-14 15:38:21,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 9092 transitions. [2021-12-14 15:38:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:21,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:21,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:21,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:38:21,924 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2021-12-14 15:38:21,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107403482] [2021-12-14 15:38:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:21,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:22,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:22,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107403482] [2021-12-14 15:38:22,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107403482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:22,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:22,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:22,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113313488] [2021-12-14 15:38:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:22,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:22,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:22,043 INFO L87 Difference]: Start difference. First operand 5454 states and 9092 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:24,002 INFO L93 Difference]: Finished difference Result 15054 states and 24055 transitions. [2021-12-14 15:38:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:24,042 INFO L225 Difference]: With dead ends: 15054 [2021-12-14 15:38:24,043 INFO L226 Difference]: Without dead ends: 11737 [2021-12-14 15:38:24,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:24,057 INFO L933 BasicCegarLoop]: 4497 mSDtfsCounter, 4954 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:24,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4974 Valid, 21483 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:38:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-12-14 15:38:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8755. [2021-12-14 15:38:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8755 states, 8074 states have (on average 1.6154322516720336) internal successors, (13043), 8108 states have internal predecessors, (13043), 455 states have call successors, (455), 192 states have call predecessors, (455), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2021-12-14 15:38:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 14260 transitions. [2021-12-14 15:38:24,433 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 14260 transitions. Word has length 112 [2021-12-14 15:38:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:24,433 INFO L470 AbstractCegarLoop]: Abstraction has 8755 states and 14260 transitions. [2021-12-14 15:38:24,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 14260 transitions. [2021-12-14 15:38:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:24,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:24,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:24,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:38:24,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2021-12-14 15:38:24,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:24,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794334513] [2021-12-14 15:38:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:24,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:24,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:24,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794334513] [2021-12-14 15:38:24,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794334513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:24,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:24,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:24,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103890123] [2021-12-14 15:38:24,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:24,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:24,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:24,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:24,534 INFO L87 Difference]: Start difference. First operand 8755 states and 14260 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:26,926 INFO L93 Difference]: Finished difference Result 27325 states and 43401 transitions. [2021-12-14 15:38:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:27,003 INFO L225 Difference]: With dead ends: 27325 [2021-12-14 15:38:27,003 INFO L226 Difference]: Without dead ends: 20707 [2021-12-14 15:38:27,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:27,031 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4927 mSDsluCounter, 16957 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:27,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21431 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:38:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2021-12-14 15:38:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 15341. [2021-12-14 15:38:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15341 states, 14020 states have (on average 1.5793865905848787) internal successors, (22143), 14086 states have internal predecessors, (22143), 871 states have call successors, (871), 384 states have call predecessors, (871), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2021-12-14 15:38:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15341 states to 15341 states and 24742 transitions. [2021-12-14 15:38:27,876 INFO L78 Accepts]: Start accepts. Automaton has 15341 states and 24742 transitions. Word has length 112 [2021-12-14 15:38:27,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:27,877 INFO L470 AbstractCegarLoop]: Abstraction has 15341 states and 24742 transitions. [2021-12-14 15:38:27,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand 15341 states and 24742 transitions. [2021-12-14 15:38:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:27,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:27,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:27,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:38:27,889 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:27,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2021-12-14 15:38:27,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:27,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200804089] [2021-12-14 15:38:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:27,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:27,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:27,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200804089] [2021-12-14 15:38:27,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200804089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:27,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:27,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:27,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682685814] [2021-12-14 15:38:27,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:27,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:27,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:27,982 INFO L87 Difference]: Start difference. First operand 15341 states and 24742 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:31,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:31,124 INFO L93 Difference]: Finished difference Result 51275 states and 81797 transitions. [2021-12-14 15:38:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:31,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:31,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:31,424 INFO L225 Difference]: With dead ends: 51275 [2021-12-14 15:38:31,425 INFO L226 Difference]: Without dead ends: 38071 [2021-12-14 15:38:31,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:31,467 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4805 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 21517 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38071 states. [2021-12-14 15:38:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38071 to 28481. [2021-12-14 15:38:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5581583822167335) internal successors, (40375), 26042 states have internal predecessors, (40375), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-12-14 15:38:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46160 transitions. [2021-12-14 15:38:32,983 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46160 transitions. Word has length 112 [2021-12-14 15:38:32,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:32,984 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46160 transitions. [2021-12-14 15:38:32,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46160 transitions. [2021-12-14 15:38:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:33,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:33,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:33,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:38:33,006 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1164896607, now seen corresponding path program 1 times [2021-12-14 15:38:33,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:33,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535839308] [2021-12-14 15:38:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:33,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:33,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535839308] [2021-12-14 15:38:33,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535839308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:33,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:33,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:33,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004989363] [2021-12-14 15:38:33,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:33,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:33,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:33,116 INFO L87 Difference]: Start difference. First operand 28481 states and 46160 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:35,689 INFO L93 Difference]: Finished difference Result 61777 states and 101218 transitions. [2021-12-14 15:38:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:35,842 INFO L225 Difference]: With dead ends: 61777 [2021-12-14 15:38:35,842 INFO L226 Difference]: Without dead ends: 35431 [2021-12-14 15:38:35,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:35,908 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4580 mSDsluCounter, 16378 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20665 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:35,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20665 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:38:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35431 states. [2021-12-14 15:38:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35431 to 28481. [2021-12-14 15:38:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5531799938252546) internal successors, (40246), 26042 states have internal predecessors, (40246), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-12-14 15:38:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46031 transitions. [2021-12-14 15:38:37,735 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46031 transitions. Word has length 112 [2021-12-14 15:38:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:37,736 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46031 transitions. [2021-12-14 15:38:37,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46031 transitions. [2021-12-14 15:38:37,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:38:37,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:37,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:37,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:38:37,757 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1805214495, now seen corresponding path program 1 times [2021-12-14 15:38:37,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:37,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038954600] [2021-12-14 15:38:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:37,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:38:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:38:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:38:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:38:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:37,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:37,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038954600] [2021-12-14 15:38:37,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038954600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:37,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:37,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:37,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485296674] [2021-12-14 15:38:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:37,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:37,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:37,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:37,860 INFO L87 Difference]: Start difference. First operand 28481 states and 46031 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:42,756 INFO L93 Difference]: Finished difference Result 96071 states and 155187 transitions. [2021-12-14 15:38:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 15:38:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:42,963 INFO L225 Difference]: With dead ends: 96071 [2021-12-14 15:38:42,963 INFO L226 Difference]: Without dead ends: 69727 [2021-12-14 15:38:43,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:43,026 INFO L933 BasicCegarLoop]: 4489 mSDtfsCounter, 4782 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 21475 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:43,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4794 Valid, 21475 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:38:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69727 states.